Configuration (Direction of power flow)

 can be either, inline or right angle 

must be inline 

must be right angle 

Application I -precision of motion  

standard automation

moderate positioning accuracy and repeatability 

very tight positioning accuracy 

unidirectional

 direction of motion changing cw / ccw

direction of motion and torque changing cw / ccw

Indoor / dry

outdoor 

wash down

Environment II- IP Class

not relevant

IP 54 / 55

 IP 65 / 66

Backlash

 low, but > 15 arc min)

very low  (8 to 15 arc min)

extremely low  
    3 to 8 arc min ( or lower)

Mounting

  can be either, front face mount or output flange

must be front face mount

must have output flange

Output style

  can be either, keyed or smooth keyless solid shaft

 keyed shaft

  rotating flange  

 Output radial or axial loads 

 none

  moderate  

 high 

Recommended Neugart gearhead type: